the 300kW diesel generator set is powered by yc6mj480l-d20 \ yc6mk420l-d20 high-power diesel engine produced by Yuchai, and adopts the patented technology of integral crankcase, rear gear chamber and point line meshing, with low noise; Wet cylinder liner structure, easy to maintain; P7100 oil pump, ground inertia small aperture p-type injector and Honeywell new high-efficiency supercharger are adopted, with low fuel consumption; Adopt Yuchai's proprietary piston ring sealing technology and valve oil seal technology to reduce lubricating oil consumption; 42CrMo forged steel crankshaft, high pressure forging, high frequency quenching of shaft diameter and fillet, improving fatigue strength and wear resistance; Carry out reliability development in strict accordance with the mechanical development procedures of famous European companies, and the overhaul period of the whole machine is more than 12000 hours.